<template>
  <div class="header">
    <van-icon name="arrow-left" class="icon" @click="toBack"/>
    <div>{{title}}</div>
    <div class="edit" v-if="edit" @click="editClick">
      {{store.state.edit?'编辑':'完成'}}
    </div>
  </div>
</template>

<script>
import {useRouter} from 'vue-router'
import emitter from '../common/js/evenbus';
import {Toast} from 'vant';
import {useStore} from 'vuex'
export default {
  props:['title','edit'],
  setup(){
    const store=new useStore();
    const router = new useRouter();
    const toBack=()=> {
      router.back();
    }
    //编辑按钮
    const editClick=()=> {
      if(store.state.cartList.length){
        store.commit('EDIT')
        emitter.emit('edit')
      }else{
        Toast.fail('购物车空空如也！')
      }
    }

    return {
      toBack,
      editClick,
      store
    }
  }
}
</script>

<style lang="less" scoped>
.header {
  background-color: #fff;
  height: 40px;
  font-size: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid #d7d7d7;
  .icon {
    position: absolute;
    left: 10px;
  }
  .edit {
    font-size: 16px;
    position: absolute;
    right: 15px;
    font-weight: normal;
  }
}
</style>